Boston: Most young people under the age of 21 who develop alleged inflammation of the heart muscle related to the Covid-19 vaccine, known as myocarditis, has mild symptoms that increase rapidly, according to a study.
Myocarditis is a rare but serious condition that causes inflammation of the heart muscle.
It can weaken the heart and affect the cardiac electrical system, which makes the heart pump regularly.
This is most often the result of infection or inflammation caused by a virus, the researchers said.
“The highest level of myocarditis after Covid-19 vaccination has been reported among adult and young men,” said Jane W Newburger, seat of colleagues at the Boston Child Hospital, and Professor of Pediatric Commonwealth at Harvard Medical School, USA.
“While the current data on the symptoms, the severity of the case and short-term results is limited, we departed to examine a large group of alleged cases of this heart condition because it was related to the Covid-19 vaccine in adolescents and adults who were younger than 21 in North America,” said Newburger, senior research writer.
This study, published in a circulation journal, reviewed medical records of patients who were younger than 21 by using data from 26 pediatric medical centers throughout the US and Canada.
Of 139 teenagers and young adults, ranging from 12 to 20 years, the researchers identified and evaluated most white patients (66.2 percent), nine of 10 (90.6 percent) were the age of men and the median was 15.8 years .
Almost every case (97.8 percent) followed the MRNA vaccine, and 91.4 percent occurred after the second dose of vaccine.
Symptom life occurs at an average of two days after administration of vaccines.
Chest pain is the most common symptom (99.3 percent), fever and shortness of breath each occurred at 30.9 percent and 27.3 percent of patients, respectively.
About one in five patients (18.7 percent) was received for intensive care, but there was no death, the researchers said, adding most patients to be hospitalized for two or three days.
More than three quarters (77.3 percent) patients who receive heart MRI show evidence of inflammation or injury to the heart muscle, they said.
Nearly 18.7 percent have at least the left ventricular function that decreases slightly (squeeze liver) in the presentation, but the heart function has returned to normal on all returning for follow-up.
“This data shows that most cases of alleged myocarditis related to the Covid-19 vaccine in people who are younger than 21 lightweight and recover quickly,” said the first author of this study, Dongngan T Truong, a professor of Utah University, USA.
“We are very happy to see the type of recovery.
However, we are waiting for further study to better understand the long-term results of patients who have myocarditis related to Covid-19 vaccination,” Truong said.
The researchers said future studies must follow patients suffering from the myocarditis regarding the vaccine in the long term, because this study only examined the patient directly and did not have follow-up data.
They also recognize some important limitations to consider.
The research design does not allow scientists to estimate the percentage of those who receive vaccines and those who develop this rare complication, also does not allow for examining risk-benefit ratios.
Patients included in this study were also evaluated in academic medical centers and may be worse than other cases found in a community.